HEAT-COLLECTING MEMBER AND AGRICULTURAL HOUSE
A heat-collecting member 1 is provided with: a body portion 10 which is a metal extrudate forming a hollow portion 20 extending from a first end 15 toward a second end 16, and having a light-receiving surface 11c for irradiation with sunlight; a plurality of lids 50A, 50B respectively disposed at th...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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